Photoresistor module Arduino AVR PIC Ra Pi

KY-018 photoresistor module for Arduino AVR PIC Raspberry Pi A932 HM

Features:

Introduction

Photoresistor in our daily lives but also be able to see, is mainly used in smart switch, giving our students Live brings some convenience, but, in our daily electronic design will also be used. Then in order to make better use, We have the appropriate module, easy to use, and efficient.

overview

Photoresistors are semiconductor photosensitive devices, in addition to having high sensitivity, fast response, consistent with the spectral characteristics and value of good features, but at a high temperature, and humidity in harsh environments, but also to maintain

According to the spectral characteristics of the photoresistor has three photoresistor: Ultraviolet photosensitive resistance, infrared light-sensitive resistors, Visible photosensitive resistance;

The main parameters are as follows

A>. dark current, dark resistance: photosensitive resistance at a certain applied voltage, when the light is not irradiated when the flowing Current is called dark current. Applied voltage and dark current ratio as the dark resistance;

C>. volt-ampere characteristic curve. Voltage characteristic curves are used to describe the resistance of the applied voltage and the photosensitive photocurrent relationship, On the photosensitive devices, the light current with applied voltage increases.